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Outward Facing Sidewall
asymmetrical tire that has a particular side that
faces outward when mounted on a vehicle.
The side of the tire that contains a whitewall,
bears white lettering, or bears manufacturer,
brand, and/or model name molding that is higher
or deeper than the same moldings on the other
sidewall of the tire.
Passenger (P-Metric) Tire
passenger cars and some light duty trucks and
multipurpose vehicles.
Recommended Inflation Pressure
manufacturer's recommended tire inflation pressure
as shown on the tire placard. See Inflation - Tire
Pressure on page 5-60 and Loading the Vehicle
on page 4-21.
Radial Ply Tire
A pneumatic tire in which the
:
ply cords that extend to the beads are laid at
90 degrees to the centerline of the tread.
Rim
A metal support for a tire and upon which
:
the tire beads are seated.
Sidewall
The portion of a tire between the tread
:
and the bead.
Speed Rating
An alphanumeric code assigned to
:
a tire indicating the maximum speed at which a
tire can operate.
The side of an
:
A tire used on
:
Vehicle
:
Traction
The friction between the tire and the
:
road surface. The amount of grip provided.
Tread
The portion of a tire that comes into
:
contact with the road.
Treadwear Indicators
called wear bars, that show across the tread of
a tire when only 1/16 inch (1.6 mm) of tread
remains. See When It Is Time for New Tires
on page 5-69.
UTQGS (Uniform Tire Quality Grading
Standards)
A tire information system that
:
provides consumers with ratings for a tire's
traction, temperature, and treadwear. Ratings are
determined by tire manufacturers using government
testing procedures. The ratings are molded into
the sidewall of the tire. See Uniform Tire Quality
Grading on page 5-72.
Vehicle Capacity Weight
designated seating positions multiplied by 150 lbs
(68 kg) plus the rated cargo load. See Loading
the Vehicle on page 4-21.
Vehicle Maximum Load on the Tire
an individual tire due to curb weight, accessory
weight, occupant weight, and cargo weight.
Narrow bands, sometimes
:
The number of
:
Load on
:
5-59
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